Mezonos Maven: my grandfather went through Auschwitz. (Cantoresq, he was from Kisvarda also!) He told me that after the war, he looked out during the trials to see if a certain SS guard’s name came up. Why? So he could go and testify on his behalf. He told me stories of what this SS guard did for him and some of the other Jews in the same barracks as him. My grandfather said, somewhere back, he must have had some Jewish blood in him.
Yes, sometimes there could have been reason to try and help even a Nazi.